Sympathies for Satan

Following the reading of Milton's Paradise Lost, I found Milton's language of Satan to be very interesting. It seems that although Satan is generally depicted and known as the antagonist for deceiving Adam and Eve, Milton writes in an unusually favorable manner toward Satan. In Book 9, Milton reveals Satan's feelings toward the new paradise God has created, "Rocks, dens, and caves; but I in none of these find place or refuge; and the more I see pleasures about me, so much more I feel torment within me." In this passage we can see that Satan is miserable and perhaps regrets his fall from heaven. Here Milton's language seems that he feels sympathetic towards Satan's demise, that no acts can be considered good outside the law of God. Milton puts Satan in a human-like aspect where he feels grief for his rebellion against God, and the sight of God's new paradise only makes Satan more angry towards mankind. I found this aspect really interesting and I wasn't quite sure what to make of it, but it is interesting to read about Satan in a sympathetic light.